Sounds like a cool game. But if you are going to continue developing it, then should really make it run on non-legacy hardware and port it to all the three OS distributions (MorphOS, OS4, and AROS) if you want people to play it in the future too. MorphOS and OS4 will both be able to run it (even in 68k) if it is independent of legacy hardware and uses the standard AmigaOS 3.1 API. AROS need a recompilation to x86 (or whatever the target HW is). You could also have a look at the
Open Amiga effort, that aims to set some common standards for future Amiga development.